Why 5G Rollout Is Slowed: Cost, Spectrum, and Coverage Challenges

Alistair Elliott, CEO of Solutions at Pod Group, explains why the promise of 5G is still facing significant hurdles.

High Setup Costs

Deploying 5G requires a comprehensive network infrastructure. According to Elliott, operators with deep pockets may launch services once demand is clear, but most will adopt a phased approach to safeguard ROI. Like 4G, investment will first target high‑density urban markets where the return is most immediate.

Millimetre‑Wave Spectrum Limits Reach

To deliver the advertised peak speeds, carriers rely on millimetre‑wave (mmWave) frequencies—roughly 24 to 100 GHz. While mmWave offers massive bandwidth and ultra‑low latency, its signals are short‑range and easily blocked by buildings, trees, and even rain. This forces operators to install many more small cells, slowing widespread rollout.

Patchy Coverage Across Frequencies

In the near term, 5G will operate on lower‑frequency bands (600 MHz to 3 GHz). Operators repurpose existing 3G/4G spectrum and acquire new licenses from regulators. Across Europe, three bands are earmarked for 5G:

• Sub‑1 GHz (700 MHz) – provides broad area and deep indoor coverage.
• 1–6 GHz (C‑band, ~3.5 GHz) – balances coverage and capacity.
• Above 6 GHz – delivers the highest data rates via mmWave.

Combining these layers promises high speed in hotspots while maintaining coverage, but the result is uneven service quality that can deter users.

In the United States, operators like T‑Mobile are leaning heavily on their 600 MHz holdings, which originally powered LTE. The rollout is largely fragmented, reflecting commercial rather than coordinated strategy, and contributes to inconsistent coverage nationwide.

Rural Deployment Remains Uncertain

Infrastructure costs in low‑density areas make full‑scale 5G deployment unlikely in the short term. Instead, we will see private networks and targeted urban deployments in central business districts and large venues.

Future Device and Network Strategies

To mitigate coverage gaps, future devices may employ dual connectivity: a low‑frequency control channel that seamlessly switches to a high‑frequency data channel. Moreover, network sharing—between operators or with neutral host partners—will become essential to reduce duplication and accelerate deployment.

Ultimately, the vision for 5G will involve mmWave in city centers and indoor venues, supported by lower‑frequency layers for broader reach. Whether these ambitious plans materialize quickly remains to be seen.

Author: Alistair Elliott, CEO, Solutions, Pod Group